/*
 *  Copyright 2005 Blandware (http://www.blandware.com)
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package com.blandware.atleap.webapp.action.core.statistics.visitor;

import com.blandware.atleap.common.Constants;
import com.blandware.atleap.model.core.statistics.Visit;
import com.blandware.atleap.service.core.StatisticsManager;
import com.blandware.atleap.webapp.action.core.BaseAction;
import com.blandware.atleap.webapp.form.core.statistics.VisitForm;
import org.apache.commons.validator.GenericValidator;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * <p>Allows to view visit details.</p>
 * <p><a href="ViewVisitAction.java.html"><i>View source</i></a></p>
 *
 * @author Roman Puchkovskiy <a href="mailto:roman.puchkovskiy@blandware.com">
 *         &lt;roman.puchkovskiy@blandware.com&gt;</a>
 * @version $Revision: 1.2 $ $Date: 2008/04/29 17:51:49 $
 * @struts.action path="/core/statistics/viewVisit"
 * name="visitForm"
 * validate="false"
 * roles="core-statistics-view"
 * @struts.action-forward name="viewVisit"
 * path=".core.statistics.visit.view"
 * @struts.action-forward name="listVisitors"
 * path="/core/statistics/visitors.do"
 * redirect="true"
 */
public final class ViewVisitAction extends BaseAction {
	/**
	 * @param mapping  The ActionMapping used to select this instance
	 * @param form     The optional ActionForm bean for this request (if any)
	 * @param request  The HTTP request we are proceeding
	 * @param response The HTTP response we are creating
	 * @return an ActionForward instance describing where and how
	 *         control should be forwarded, or null if response
	 *         has already been completed
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
	                             HttpServletRequest request,
                                 HttpServletResponse response) throws Exception {

        VisitForm visitForm = (VisitForm) form;

        Long visitId = null;
        if (!GenericValidator.isBlankOrNull(visitForm.getId())) {
            visitId = Long.valueOf(visitForm.getId());
        }
        if (visitId == null) {
            if (log.isInfoEnabled()) {
                log.info("Missing visit number, returning...");
            }
            return mapping.findForward("listVisitors");
        }

        StatisticsManager statisticsManager = (StatisticsManager) getBean(Constants.STATISTICS_MANAGER_BEAN);
        Visit visit = statisticsManager.retrieveVisit(visitId);

        request.setAttribute("visit", visit);

		return mapping.findForward("viewVisit");
	}
}
